Astronomers Are Still Trying to Understand How a Galaxy's Spiral Arms Form
Illustrative image Spiral galaxies, including grand spirals like the Whirlpool galaxy, are plentiful. But it's still a mystery how their spiral arms form and persist for hundreds of millions of years, and why some galaxies have one, two, or three or more arms. New research based on Euclid data finds links between galaxy mass, star format…
Source：Universe Today
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